A single-phase automatic reclosing circuit breaker

Abstract

The invention discloses a single-phase auto-reclosing breaker and belongs to the technical field of electrical equipment. One side of a breaker mechanism of the single-phase auto-reclosing breaker is molded with an accommodating chamber from an upper end face of the breaker mechanism downwards, an electrical motor is arranged in the accommodating chamber, an output shaft of the electrical motor penetrates outside the accommodating chamber, a driving gear which is arranged on the output shaft of the electrical motor is driven by the electrical motor to rotate, and a driven gear which is engaged with the driving gear is driven through rotation of the driving gear to do linear reciprocating motion. According to the single-phase auto-reclosing breaker, compared with similar products, the fixed mounting mode of the electrical motor is broken through, the electrical motor is arranged at the side face of the breaker mechanism and is mounted on a mounting board of a reclosing mechanism, mechanism height of a reclosing breaker is reduced, so the single-phase auto-reclosing breaker can be mounted in a narrow space of a household ammeter case, matching with the mechanism can be realized simultaneously without increasing height of the reclosing breaker, auto-reclosing of the breaker is realized, the structure is compact, and stability is relatively strong.

Description

technical field [0001] The invention belongs to the field of electrical equipment, and in particular relates to a single-phase automatic reclosing circuit breaker, which is mainly used in low-voltage power distribution lines for detection, control and protection of power distribution lines with AC 220V and below and operating current ≤ 250A. Background technique [0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions, and can close, carry and break current under abnormal circuit conditions (including short-circuit conditions) within a specified time. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, it is g...

AI Technical Summary

Problems solved by technology

The device prevents the shifting during operation and the loosening of the intelligent earth leakage circuit breaker when it is flipped over, which saves the cost of use. In actual use, it is often limited by the space. In places where the space is narrow, it is often inconvenient to operate the button switch on the cover due to the large height, and even the entire device cannot be installed. At the same time, the product is mainly Relying on the travel switch on the opening and closing mechanism, if the circuit breaker mechanism fails, the mechanism will appear false closing phenomenon, that is, the mechanism moves in place, but the display does not close, and it is easy to misjudge from a long distance

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